Corrosion

Question 1

What is corrosion?

Answer 1

Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment.

Question 2

State five different types of corrosion?

Answer 2

• Uniform
• Crevice
• Galvanic
• Pitting
• Filiform
• Intergranular
• Exfoliation
• Fretting
• Stress
• Cadmium

Question 3

What are the three methods that can be used to prevent corrosion?

Answer 3

• Use a corrosion-resistant metal such as aluminium or stainless steel.
• Cathodic Protection
• Anodic protection

Question 4

How is corrosion detected?

Answer 4

• Visual Inspection

- Non-destructive Testing

Question 5

What methods can be used to remove corrosion?

Answer 5

• Mechanical
• Wire brush
• Metal wool
• Scraping
• Abrasive pads